The Titanium Field Guide

Seiko Brightz World Time SAGZ105 (Titanium)

Archive · used only

The Seiko Brightz World Time SAGZ105 (Titanium) is a discontinued dress watch with a titanium (diamond shield hard coating) case, finished with diamond shield hard coating. It is priced under the $648.50 median for the category. No longer offered new; listed here as an archive reference for the used market.

All Seiko watchesWatch dress watchesUnder $1,000Under 11 mm thickSolarWorldtimer
Price
$579
Material
Titanium
Grade / type
Titanium (Diamond Shield hard coating)
Water resistance
100 m
Type
Dress
Case diameter
38.5 mm
Thickness
9.2 mm
Lug-to-lug
45.7 mm
Origin
Japan
Movement
Solar radio-controlled quartz (world time)
Caliber
Seiko Cal. 7B27
Complications
Worldtimer, Date
Colour
Grey
Surface treatment
Diamond Shield hard coating
Finish technology
Surface hardening
Nickel-free
Unconfirmed (contact-point materials not all confirmed)
Bracelet / strap
Crocodile leather strap
Crystal
Sapphire, super-clear coating (curved)
Display back
No
Dial
Black
Dial colours
Black
Availability
No longer offered
Status
No longer in production (discontinued JDM Brightz)
Not published
Reference, Weight, Power reserve, Hardness, Construction, Caseback, Matching bracelet, Lume
Medium confidence Verified Aug 2026 Source: SakuraWatches (SAGZ105, Titanium Hard Coating) / Yodobashi (SAGZ105) Spec checksGrade Jun 2026Price Aug 2026 Suggested by u/StudioZanello
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Frequently asked questions

What is the case material of the Seiko Brightz World Time SAGZ105 (Titanium)?

The Seiko Brightz World Time SAGZ105 (Titanium) has a titanium (diamond shield hard coating) case. It is recorded at medium confidence pending a maker-stated material.

What size is the Seiko Brightz World Time SAGZ105 (Titanium)?

It is 38.5 mm in diameter, 9.2 mm thick, 45.7 mm lug to lug, and water resistant to 100 m.

How much does the Seiko Brightz World Time SAGZ105 (Titanium) cost, and is it available?

It is no longer offered new; the guide keeps it as an archive reference for the used market, and it listed from $579 when current.

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